DDS226D-2P 65A Single-Phase WiFi Energy Meter Pakistan 2026 — Specifications, Install, Net-Metering
What is the DDS226D-2P 65A WiFi energy meter?
The CNC DDS226D-2P is a single-phase 2-pole (line + neutral) static watt-hour meter rated at 220–240 V, 65 A direct connect, accuracy Class 1 (IEC 62053-21), with built-in 2.4 GHz WiFi for remote monitoring through a vendor-neutral smart-home app. It is the WiFi-equipped upgrade of the older DDS226-1 meter (PKR 2,800), priced at PKR 9,000 on cncelectric.pk in 2026. Bi-directional active energy measurement makes it suitable for solar prosumers under NEPRA Prosumer Regulations 2026 — you log your own kWh import and export independently of the utility meter, useful for billing dispute documentation.
DDS226D-2P 65A — full specification
| Spec | Value |
|---|---|
| Model | DDS226D-2P (2-pole single-phase) |
| Rated voltage | 220–240 V AC |
| Operating voltage | 170–260 V AC (continuous operation) |
| Rated current | 5(65) A direct connect |
| Frequency | 50 Hz (45–55 Hz tolerance) |
| Accuracy class | Class 1 (±1.0%) per IEC 62053-21 |
| Standards | IEC 62052-11 + IEC 62053-21 |
| Start current | 0.004 Ib (≈20 mA) |
| Bi-directional measurement | Yes — import (consumption) + export (solar to grid) |
| Display | LCD with backlight |
| Communication | WiFi 2.4 GHz + RS485 Modbus RTU |
| Pulse output | Optical-isolated, configurable kWh/pulse |
| Power consumption | <2 W self-consumption |
| Memory retention | 15+ years after power-off |
| Mounting | DIN-rail 35 mm, 2 modules wide |
| App platform | Vendor-neutral smart-home cloud + Google Home / Alexa / Apple HomeKit |
| Operating temperature | −25 to +55 °C |
| Pakistani price | PKR 9,000 (cncelectric.pk, June 2026) |
Why pick DDS226D-2P over the older DDS226-1
| Feature | DDS226-1 (older, PKR 2,800) | DDS226D-2P (WiFi, PKR 9,000) |
|---|---|---|
| Form factor | Panel-mount board | DIN-rail (modern panels) |
| Display | Mechanical register | LCD with backlight |
| App / WiFi | No | Yes (2.4 GHz) |
| RS485 Modbus | No | Yes |
| Bi-directional kWh | No | Yes (net-metering ready) |
| Net-metering capable | No | Yes |
Install diagram — DDS226D-2P in a Pakistani single-phase DB
The meter sits on the DIN rail in your distribution box, between the main incoming MCB and the load circuits. Terminal layout (left to right on most CNC samples):
- Terminal 1 — Line IN from K-Electric / IESCO meter or main isolator
- Terminal 2 — Line OUT to your load circuits / branch MCBs
- Terminal 3 — Neutral IN from utility
- Terminal 4 — Neutral OUT to load
- RS485 A/B — 2-wire shielded daisy-chain to PLC or logger
- Pulse output — optical-isolated, ~1000 imp/kWh default (set in app)
Solar prosumer install — meter placement matters
For NEPRA net-metering you have two meters in the system:
- The K-Electric / IESCO bi-directional meter at the service-drop point — their official record for billing
- Your DDS226D-2P inside the DB — YOUR independent record
Install the DDS226D-2P on the grid side, BETWEEN the K-Electric meter and your hybrid inverter / DB. This is the point where the meter sees both:
- Import flow when your home is drawing from the grid (solar production < load)
- Export flow when your home is pushing solar surplus back (solar production > load)
If you mistakenly install it on the load side of the inverter, it only sees consumption — it cannot log the export half of the equation.
NEPRA SRO and the Rs. 25.32 vs Rs. 8.13 question
NEPRA Prosumer Regulations 2026 introduced a tariff split based on commissioning date:
- Pre-Feb 2026 commissioning — legacy buyback at Rs. 25.32 per unit exported
- Post-Feb 2026 commissioning — new tariff at Rs. 8.13 per unit exported
If your system was commissioned before the change but K-Electric's billing software is applying the new rate by mistake, your DDS226D-2P log proves the export volume. Combine that with your NEPRA commissioning certificate to file a billing dispute.
App pairing — 5-step quickstart for Pakistan
- Install your vendor-neutral smart-home app from Google Play or Apple App Store.
- Connect your phone to the 2.4 GHz SSID of your router (NOT the 5 GHz one).
- Open the app, tap "Add Device" → "Energy Meter" → "DDS226D".
- Power the meter; press and hold the SET button on the meter for 5 seconds until the WiFi icon blinks rapidly.
- Enter your WiFi password in the app; the meter pairs in ~30 seconds. Once paired, you can view live kWh import/export and historical graphs.
Common Pakistani install mistakes (specific to DDS226D-2P)
- Wrong wire size on 65 A loaded circuit — the meter's terminals accept up to 16 mm² copper. Use that size, not the thinner 10 mm² that wholesalers sometimes substitute.
- 5 GHz-only WiFi router — meter won't connect. Enable 2.4 GHz SSID separately.
- No DIN-rail end-stop — vibration from running geyser pump loosens the meter over months.
- Daisy-chained RS485 without termination resistor — multi-meter setups need 120 Ω at the last device, else Modbus errors.
- No SPD upstream — Pakistani grid surges blow the internal MCU. Pair with a YCS6-B AC SPD on the same DIN rail.
- Wrong phase rotation on RS485 — A and B wires reversed = no Modbus comms. Try swapping.
Specification compliance summary
- IEC 62052-11: General requirements for AC electricity-measuring equipment — verified accuracy at 0.05×Ib, 0.1×Ib, 0.2×Ib, 0.5×Ib, Ib, 2×Ib, Imax
- IEC 62053-21: Static energy meters Class 1, ±1.0% accuracy
- NEPRA Prosumer Regulations 2026: meter-data-availability requirement
- PSQCA: Pakistan Standards review mark on import box
Buy + related guides
Buy DDS226D-2P at cncelectric.pk — PKR 9,000 · WiFi Energy Meter Master Buyer Guide · All CNC energy meters · Smart Home Master Guide